Resource tracking

US8335762B2 · kind B2 · utility

Assignee

• Microsoft Corporation · US

Inventors

• Abolade Gbadegesin · Sammamish, US
• Viraj Mody · San Francisco, US
• David C. Steere · Bellevue, US
• William Michael Zintel · Woodinville, US
• Bruce W. Copeland · Redmond, US
• Atul Adya · Bellevue, US
• Thomas Kleinpeter · San Francisco, US

Key dates

• Filing date: Oct 6, 2008
• Grant date: Dec 18, 2012
• Expiry date: Feb 26, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F16/24568
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Clients may subscribe to resources for the purpose of receiving notifications of changes in the resource (e.g., a file is added to a shared folder). Storing subscriptions within persistent storage provides data security in the event of a service failure, at the cost of high latency in accessing subscription data. An efficient method for tracking a resource is provided herein. A subscription service creates subscriptions and monitors resources for a client. Upon a subscribed resource change, a notification service stores a notification of the change into a queue associated with the client. Efficient resource tracking is achieved because notification and subscription data is stored in low latency soft memory. The notification service is configured to detect a failure in the notification service and/or subscription service. In the event a service fails, the client provides a recovery mechanism by resubscribing to resources the client is interested in.